Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system

Solomon Inalegwu Okopi; Jianfei Zeng; Xuetong Fan; Jiaxin Lu; Jiahao Cui; Yang Hu; Jiayu Wang; Jiaxin Chen; Oraléou Sangué Djandja; Yingqun Ma; Lei Che; Gu Zhaolin; Fuqing Xu

doi:10.1016/j.wasman.2024.01.038

Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system

Solomon Inalegwu Okopi
, Jianfei Zeng
, Xuetong Fan
, Jiaxin Lu
, Jiahao Cui
, Yang Hu
, Jiayu Wang
, Jiaxin Chen
, Oraléou Sangué Djandja
, Yingqun Ma
, Lei Che
, Gu Zhaolin
, Fuqing Xu

Xi'an Jiaotong University
Chinese Academy of Agricultural Sciences
Beijing Technology and Business University
Dongguan University of Technology
Huzhou Normal University

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

This research conducted an environmental life cycle assessment (LCA) to evaluate an anaerobic digestion-co-pyrolysis (ADCo-Py) system in which pyrolysis was added to traditional food waste (FW) anaerobic digestion (AD) systems to treat the solid fraction and impurities separated from FW. The solid fraction, including impurities such as wooden chopsticks, plastics, eggshells, and bones, is usually incinerated, while pyrolysis can be a viable alternative to optimize FW treatment. The environmental impact of ADCo-Py was compared with stand-alone AD, pyrolysis, and ADCo-INC (AD with incineration of separated solids). The results indicated that both ADCo-Py (−1.726 kg CO₂-Eq/kg_FW) and ADCo-INC (−1.535 kg CO₂-Eq/kg_FW) outperform stand-alone AD (−0.855 kg CO₂-Eq/kg_FW) and pyrolysis (−0.181 kg CO₂-Eq/kg_FW) in mitigating global warming potential (GWP). Additionally, pretreatments were found to have the most significant influence on GWP, ecotoxicity potential (ETP), and acidification potential (AP). The two-step pretreatment in ADCo-Py, including the separation of solids and drying, significantly improved the environmental sustainability of the system when compared with standalone pyrolysis.

Original language	English
Pages (from-to)	130-143
Number of pages	14
Journal	Waste Management
Volume	179
DOIs	https://doi.org/10.1016/j.wasman.2024.01.038
State	Published - 30 Apr 2024

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 12 Responsible Consumption and Production

Keywords

Bioenergy
Bones
Impurities
Integrated systems
Life cycle assessment
Plastics
Resource recovery

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10.1016/j.wasman.2024.01.038

Cite this

@article{3b1980231d66475d9251408f23403a2b,

title = "Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system",

abstract = "This research conducted an environmental life cycle assessment (LCA) to evaluate an anaerobic digestion-co-pyrolysis (ADCo-Py) system in which pyrolysis was added to traditional food waste (FW) anaerobic digestion (AD) systems to treat the solid fraction and impurities separated from FW. The solid fraction, including impurities such as wooden chopsticks, plastics, eggshells, and bones, is usually incinerated, while pyrolysis can be a viable alternative to optimize FW treatment. The environmental impact of ADCo-Py was compared with stand-alone AD, pyrolysis, and ADCo-INC (AD with incineration of separated solids). The results indicated that both ADCo-Py (−1.726 kg CO2-Eq/kgFW) and ADCo-INC (−1.535 kg CO2-Eq/kgFW) outperform stand-alone AD (−0.855 kg CO2-Eq/kgFW) and pyrolysis (−0.181 kg CO2-Eq/kgFW) in mitigating global warming potential (GWP). Additionally, pretreatments were found to have the most significant influence on GWP, ecotoxicity potential (ETP), and acidification potential (AP). The two-step pretreatment in ADCo-Py, including the separation of solids and drying, significantly improved the environmental sustainability of the system when compared with standalone pyrolysis.",

keywords = "Bioenergy, Bones, Impurities, Integrated systems, Life cycle assessment, Plastics, Resource recovery",

author = "\{Inalegwu Okopi\}, Solomon and Jianfei Zeng and Xuetong Fan and Jiaxin Lu and Jiahao Cui and Yang Hu and Jiayu Wang and Jiaxin Chen and \{Sangu{\'e} Djandja\}, Oral{\'e}ou and Yingqun Ma and Lei Che and Gu Zhaolin and Fuqing Xu",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = apr,

day = "30",

doi = "10.1016/j.wasman.2024.01.038",

language = "英语",

volume = "179",

pages = "130--143",

journal = "Waste Management",

issn = "0956-053X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system

AU - Inalegwu Okopi, Solomon

AU - Zeng, Jianfei

AU - Fan, Xuetong

AU - Lu, Jiaxin

AU - Cui, Jiahao

AU - Hu, Yang

AU - Wang, Jiayu

AU - Chen, Jiaxin

AU - Sangué Djandja, Oraléou

AU - Ma, Yingqun

AU - Che, Lei

AU - Zhaolin, Gu

AU - Xu, Fuqing

PY - 2024/4/30

Y1 - 2024/4/30

N2 - This research conducted an environmental life cycle assessment (LCA) to evaluate an anaerobic digestion-co-pyrolysis (ADCo-Py) system in which pyrolysis was added to traditional food waste (FW) anaerobic digestion (AD) systems to treat the solid fraction and impurities separated from FW. The solid fraction, including impurities such as wooden chopsticks, plastics, eggshells, and bones, is usually incinerated, while pyrolysis can be a viable alternative to optimize FW treatment. The environmental impact of ADCo-Py was compared with stand-alone AD, pyrolysis, and ADCo-INC (AD with incineration of separated solids). The results indicated that both ADCo-Py (−1.726 kg CO2-Eq/kgFW) and ADCo-INC (−1.535 kg CO2-Eq/kgFW) outperform stand-alone AD (−0.855 kg CO2-Eq/kgFW) and pyrolysis (−0.181 kg CO2-Eq/kgFW) in mitigating global warming potential (GWP). Additionally, pretreatments were found to have the most significant influence on GWP, ecotoxicity potential (ETP), and acidification potential (AP). The two-step pretreatment in ADCo-Py, including the separation of solids and drying, significantly improved the environmental sustainability of the system when compared with standalone pyrolysis.

AB - This research conducted an environmental life cycle assessment (LCA) to evaluate an anaerobic digestion-co-pyrolysis (ADCo-Py) system in which pyrolysis was added to traditional food waste (FW) anaerobic digestion (AD) systems to treat the solid fraction and impurities separated from FW. The solid fraction, including impurities such as wooden chopsticks, plastics, eggshells, and bones, is usually incinerated, while pyrolysis can be a viable alternative to optimize FW treatment. The environmental impact of ADCo-Py was compared with stand-alone AD, pyrolysis, and ADCo-INC (AD with incineration of separated solids). The results indicated that both ADCo-Py (−1.726 kg CO2-Eq/kgFW) and ADCo-INC (−1.535 kg CO2-Eq/kgFW) outperform stand-alone AD (−0.855 kg CO2-Eq/kgFW) and pyrolysis (−0.181 kg CO2-Eq/kgFW) in mitigating global warming potential (GWP). Additionally, pretreatments were found to have the most significant influence on GWP, ecotoxicity potential (ETP), and acidification potential (AP). The two-step pretreatment in ADCo-Py, including the separation of solids and drying, significantly improved the environmental sustainability of the system when compared with standalone pyrolysis.

KW - Bioenergy

KW - Bones

KW - Impurities

KW - Integrated systems

KW - Life cycle assessment

KW - Plastics

KW - Resource recovery

UR - https://www.scopus.com/pages/publications/85187223320

U2 - 10.1016/j.wasman.2024.01.038

DO - 10.1016/j.wasman.2024.01.038

M3 - 文章

C2 - 38471251

AN - SCOPUS:85187223320

SN - 0956-053X

VL - 179

SP - 130

EP - 143

JO - Waste Management

JF - Waste Management

ER -

Environmental sustainability assessment of a new food waste anaerobic digestion and pyrolysis hybridization system

Abstract

UN SDGs

Keywords

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